Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	May 26, 2017	May 27, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive loss	$ (50.6)
Other comprehensive income (loss) before reclassifications	11.0
Amounts reclassified from accumulated other comprehensive income (loss)	3.3
Total other comprehensive loss, net	14.3	$ 2.4
Accumulated other comprehensive loss	(36.3)
Unrealized gain (loss) on investments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive loss	(0.3)
Other comprehensive income (loss) before reclassifications	0.0
Amounts reclassified from accumulated other comprehensive income (loss)	0.0
Total other comprehensive loss, net	0.0
Accumulated other comprehensive loss	(0.3)
Pension and other post-retirement liability adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive loss	13.0
Other comprehensive income (loss) before reclassifications	(0.5)
Amounts reclassified from accumulated other comprehensive income (loss)	3.3
Total other comprehensive loss, net	2.8
Accumulated other comprehensive loss	15.8
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive loss	(63.3)
Other comprehensive income (loss) before reclassifications	11.5
Amounts reclassified from accumulated other comprehensive income (loss)	0.0
Total other comprehensive loss, net	11.5
Accumulated other comprehensive loss	$ (51.8)